SMTC 21549?2010
斜角焊缝 f2≥0.12 tmin tmin =最薄板厚 当tmin≤2时 f2≥0.2 SN≥0.7 tmin 图20 上板端面必须100%熔透 tmin -最薄板厚 多重搭接角焊缝 f3≥0.12 tmin tmin =最薄板厚 当tmin≤2时 f3≥0.2 SN1≥0.7 tmin SN2≥0.7 tmin 上板t1,t2端面必须100%熔透 tmin -最薄板厚 S≥0.7 tmin 有圆周截面的角悍缝(空心) f1≥0.12 tmin f2≥0.12 tmin tmin =最薄板厚 当tmin≤2时 f1≥0.2 f2≥0.2 tmin -最薄板厚 有圆周截面的角悍缝(实心) f1≥0.12 tmin f2≥0.12 tmin tmin =最薄板厚 当tmin≤2时 f1≥0.2 f2≥0.2 SN≥0.7 tmin 图21 tmin -最薄板厚 12
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SMTC 21549?2010
塞焊 和L×B Welded feature seam Welded seam sketch map f L≥?和 f L≥L或B f2≥0.12 tmin tmin =最薄板厚 当tmin≤2时 f2≥0.2 上板端面必图18 须100%熔透 孔必须完全封闭 Weld penetration (mm) f1≥0.12 tmin f2≥0.12 tmin tmin =Minimum plate thickness When tmin≤2 f1及f2≥0.2 f2≥0.12 tmin tmin =Minimum plate thickness When tmin≤2 f2≥0.2 Welded seam thickness (mm) SN≥0.7 tmin Profile (See Section 5.3) Figure 13 Figure 17 Figure 19 Fillet tmin -Minimum plate thickness Overlapping fillet Figure 14 Upper end Figure surface 15 should be Figure penetrated 16 100% tmin -Minimum plate thickness SN≥0.7 tmin 13
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SMTC 21549?2010
Oblique fillet f2≥0.12 tmin tmin =Minimum plate thickness When tmin≤2 f2≥0.2 SN≥0.7 tmin Figure 20 Upper end surface should be penetrated 100% tmin -Minimum plate thickness SN1≥0.7 tmin SN2≥0.7 tmin Multi-overlapping fillet f3≥0.12 tmin tmin =Minimum plate thickness When tmin≤2 f3≥0.2 Upper plate t1,t2 end surface should be penetrated 100% tmin -Minimum plate thickness S≥0.7 tmin Fillet with circumferential section (hollow) f1≥0.12 tmin f2≥0.12 tmin tmin =Minimum plate thickness When tmin≤2 f1≥0.2 f2≥0.2 tmin -Minimum plate thickness 14
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SMTC 21549?2010
Fillet with circumferential section (solid) f1≥0.12 tmin f2≥0.12 tmin tmin =Minimum plate thickness When tmin≤2 f1≥0.2 f2≥0.2 And L×B SN≥0.7 tmin Figure 21 tmin -Minimum plate thickness Slot welding f L≥? and f L≥L or B f2≥0.12 tmin tmin =Minimum plate thickness When tmin≤2 f2≥0.2 Upper end Figure surface 18 should be penetrated 100% Holes should be completely sealed
3.3.3.3 焊缝必须符合表3中所列的焊缝缺陷的极限值
3.3.3.3 Welded seam should conform to limit values of welded seam flaws listed in Table 3.
若图纸没有其它的要求,则下表对缺陷的极限值适用。焊缝缺陷不允许对表面保护有不好的影响。
If there are no other requirements in the drawings, the follow table shall apply to limit values of flaws. Flaws of welded seams should not have unfavorable impact on surface protection. 评价级别 D-低 C-中 B-高
Evaluation grade D-low C-medium B-high 表3 焊缝缺陷的极限值
Table 3 Limit values of flaws of welded seams 序号 1 2
缺陷名称 裂纹 孔隙率和气孔 说明 2)单个气孔的最大尺寸 不规则性的极限值 评价级别 规定值 C B 不允许 1% h≤0.3a mm 15
1)全部气孔在投影面或折射面上的最大尺寸 B 打印、拷贝即为非受控文件,请核查最新版本
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SMTC 21549?2010
3 4 5 6 气道和条状气孔 夹杂(除铜外) 未熔合 熔深不够 1)长的不规则性1)长的不规则性 (2) B B B B C 规定熔深 实际熔深 B 不允许 h≤0. 3a mm 不允许 h≤0. 3a mm 不允许 若低于最低熔深不允许 2)短的不规则性2)短的不规则性(1)(2)(1) 7 间隙的配合 B h≤0.5+0.1 a mm 最大2 mm 8 咬边 B h≤0.5mm 9 余高太大 B h≤1+0.1b mm 最大3 mm 16
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